vfs: do bulk POLL* -> EPOLL* replacement

This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

drivers/usb/class/cdc-wdm.c

@@ -603,16 +603,16 @@ static __poll_t wdm_poll(struct file *file, struct poll_table_struct *wait)
 
 	spin_lock_irqsave(&desc->iuspin, flags);
 	if (test_bit(WDM_DISCONNECTING, &desc->flags)) {
-		mask = POLLHUP | POLLERR;
+		mask = EPOLLHUP | EPOLLERR;
 		spin_unlock_irqrestore(&desc->iuspin, flags);
 		goto desc_out;
 	}
 	if (test_bit(WDM_READ, &desc->flags))
-		mask = POLLIN | POLLRDNORM;
+		mask = EPOLLIN | EPOLLRDNORM;
 	if (desc->rerr || desc->werr)
-		mask |= POLLERR;
+		mask |= EPOLLERR;
 	if (!test_bit(WDM_IN_USE, &desc->flags))
-		mask |= POLLOUT | POLLWRNORM;
+		mask |= EPOLLOUT | EPOLLWRNORM;
 	spin_unlock_irqrestore(&desc->iuspin, flags);
 
 	poll_wait(file, &desc->wait, wait);

drivers/usb/class/usblp.c

@@ -479,8 +479,8 @@ static __poll_t usblp_poll(struct file *file, struct poll_table_struct *wait)
 	poll_wait(file, &usblp->rwait, wait);
 	poll_wait(file, &usblp->wwait, wait);
 	spin_lock_irqsave(&usblp->lock, flags);
-	ret = ((usblp->bidir && usblp->rcomplete) ? POLLIN  | POLLRDNORM : 0) |
-	   ((usblp->no_paper || usblp->wcomplete) ? POLLOUT | POLLWRNORM : 0);
+	ret = ((usblp->bidir && usblp->rcomplete) ? EPOLLIN  | EPOLLRDNORM : 0) |
+	   ((usblp->no_paper || usblp->wcomplete) ? EPOLLOUT | EPOLLWRNORM : 0);
 	spin_unlock_irqrestore(&usblp->lock, flags);
 	return ret;
 }

drivers/usb/class/usbtmc.c

@@ -1265,13 +1265,13 @@ static __poll_t usbtmc_poll(struct file *file, poll_table *wait)
 	mutex_lock(&data->io_mutex);
 
 	if (data->zombie) {
-		mask = POLLHUP | POLLERR;
+		mask = EPOLLHUP | EPOLLERR;
 		goto no_poll;
 	}
 
 	poll_wait(file, &data->waitq, wait);
 
-	mask = (atomic_read(&data->srq_asserted)) ? POLLIN | POLLRDNORM : 0;
+	mask = (atomic_read(&data->srq_asserted)) ? EPOLLIN | EPOLLRDNORM : 0;
 
 no_poll:
 	mutex_unlock(&data->io_mutex);

drivers/usb/core/devices.c

@@ -632,7 +632,7 @@ static __poll_t usb_device_poll(struct file *file,
 	event_count = atomic_read(&device_event.count);
 	if (file->f_version != event_count) {
 		file->f_version = event_count;
-		return POLLIN | POLLRDNORM;
+		return EPOLLIN | EPOLLRDNORM;
 	}
 
 	return 0;

drivers/usb/core/devio.c

@@ -2578,11 +2578,11 @@ static __poll_t usbdev_poll(struct file *file,
 
 	poll_wait(file, &ps->wait, wait);
 	if (file->f_mode & FMODE_WRITE && !list_empty(&ps->async_completed))
-		mask |= POLLOUT | POLLWRNORM;
+		mask |= EPOLLOUT | EPOLLWRNORM;
 	if (!connected(ps))
-		mask |= POLLHUP;
+		mask |= EPOLLHUP;
 	if (list_empty(&ps->list))
-		mask |= POLLERR;
+		mask |= EPOLLERR;
 	return mask;
 }
 

drivers/usb/gadget/function/f_fs.c

@@ -644,7 +644,7 @@ static long ffs_ep0_ioctl(struct file *file, unsigned code, unsigned long value)
 static __poll_t ffs_ep0_poll(struct file *file, poll_table *wait)
 {
 	struct ffs_data *ffs = file->private_data;
-	__poll_t mask = POLLWRNORM;
+	__poll_t mask = EPOLLWRNORM;
 	int ret;
 
 	poll_wait(file, &ffs->ev.waitq, wait);
@@ -656,19 +656,19 @@ static __poll_t ffs_ep0_poll(struct file *file, poll_table *wait)
 	switch (ffs->state) {
 	case FFS_READ_DESCRIPTORS:
 	case FFS_READ_STRINGS:
-		mask |= POLLOUT;
+		mask |= EPOLLOUT;
 		break;
 
 	case FFS_ACTIVE:
 		switch (ffs->setup_state) {
 		case FFS_NO_SETUP:
 			if (ffs->ev.count)
-				mask |= POLLIN;
+				mask |= EPOLLIN;
 			break;
 
 		case FFS_SETUP_PENDING:
 		case FFS_SETUP_CANCELLED:
-			mask |= (POLLIN | POLLOUT);
+			mask |= (EPOLLIN | EPOLLOUT);
 			break;
 		}
 	case FFS_CLOSING:

drivers/usb/gadget/function/f_hid.c

@@ -422,10 +422,10 @@ static __poll_t f_hidg_poll(struct file *file, poll_table *wait)
 	poll_wait(file, &hidg->write_queue, wait);
 
 	if (WRITE_COND)
-		ret |= POLLOUT | POLLWRNORM;
+		ret |= EPOLLOUT | EPOLLWRNORM;
 
 	if (READ_COND)
-		ret |= POLLIN | POLLRDNORM;
+		ret |= EPOLLIN | EPOLLRDNORM;
 
 	return ret;
 }

drivers/usb/gadget/function/f_printer.c

@@ -698,11 +698,11 @@ printer_poll(struct file *fd, poll_table *wait)
 
 	spin_lock_irqsave(&dev->lock, flags);
 	if (likely(!list_empty(&dev->tx_reqs)))
-		status |= POLLOUT | POLLWRNORM;
+		status |= EPOLLOUT | EPOLLWRNORM;
 
 	if (likely(dev->current_rx_bytes) ||
 			likely(!list_empty(&dev->rx_buffers)))
-		status |= POLLIN | POLLRDNORM;
+		status |= EPOLLIN | EPOLLRDNORM;
 
 	spin_unlock_irqrestore(&dev->lock, flags);
 

drivers/usb/gadget/legacy/inode.c

@@ -1225,16 +1225,16 @@ ep0_poll (struct file *fd, poll_table *wait)
        /* report fd mode change before acting on it */
        if (dev->setup_abort) {
                dev->setup_abort = 0;
-               mask = POLLHUP;
+               mask = EPOLLHUP;
                goto out;
        }
 
        if (dev->state == STATE_DEV_SETUP) {
                if (dev->setup_in || dev->setup_can_stall)
-                       mask = POLLOUT;
+                       mask = EPOLLOUT;
        } else {
                if (dev->ev_next != 0)
-                       mask = POLLIN;
+                       mask = EPOLLIN;
        }
 out:
        spin_unlock_irq(&dev->lock);

drivers/usb/misc/iowarrior.c

@@ -683,19 +683,19 @@ static __poll_t iowarrior_poll(struct file *file, poll_table * wait)
 	__poll_t mask = 0;
 
 	if (!dev->present)
-		return POLLERR | POLLHUP;
+		return EPOLLERR | EPOLLHUP;
 
 	poll_wait(file, &dev->read_wait, wait);
 	poll_wait(file, &dev->write_wait, wait);
 
 	if (!dev->present)
-		return POLLERR | POLLHUP;
+		return EPOLLERR | EPOLLHUP;
 
 	if (read_index(dev) != -1)
-		mask |= POLLIN | POLLRDNORM;
+		mask |= EPOLLIN | EPOLLRDNORM;
 
 	if (atomic_read(&dev->write_busy) < MAX_WRITES_IN_FLIGHT)
-		mask |= POLLOUT | POLLWRNORM;
+		mask |= EPOLLOUT | EPOLLWRNORM;
 	return mask;
 }
 

drivers/usb/misc/ldusb.c

@@ -417,15 +417,15 @@ static __poll_t ld_usb_poll(struct file *file, poll_table *wait)
 	dev = file->private_data;
 
 	if (!dev->intf)
-		return POLLERR | POLLHUP;
+		return EPOLLERR | EPOLLHUP;
 
 	poll_wait(file, &dev->read_wait, wait);
 	poll_wait(file, &dev->write_wait, wait);
 
 	if (dev->ring_head != dev->ring_tail)
-		mask |= POLLIN | POLLRDNORM;
+		mask |= EPOLLIN | EPOLLRDNORM;
 	if (!dev->interrupt_out_busy)
-		mask |= POLLOUT | POLLWRNORM;
+		mask |= EPOLLOUT | EPOLLWRNORM;
 
 	return mask;
 }

drivers/usb/misc/legousbtower.c

@@ -517,17 +517,17 @@ static __poll_t tower_poll (struct file *file, poll_table *wait)
 	dev = file->private_data;
 
 	if (!dev->udev)
-		return POLLERR | POLLHUP;
+		return EPOLLERR | EPOLLHUP;
 
 	poll_wait(file, &dev->read_wait, wait);
 	poll_wait(file, &dev->write_wait, wait);
 
 	tower_check_for_read_packet(dev);
 	if (dev->read_packet_length > 0) {
-		mask |= POLLIN | POLLRDNORM;
+		mask |= EPOLLIN | EPOLLRDNORM;
 	}
 	if (!dev->interrupt_out_busy) {
-		mask |= POLLOUT | POLLWRNORM;
+		mask |= EPOLLOUT | EPOLLWRNORM;
 	}
 
 	return mask;

drivers/usb/mon/mon_bin.c

@@ -1203,7 +1203,7 @@ mon_bin_poll(struct file *file, struct poll_table_struct *wait)
 
 	spin_lock_irqsave(&rp->b_lock, flags);
 	if (!MON_RING_EMPTY(rp))
-		mask |= POLLIN | POLLRDNORM;    /* readable */
+		mask |= EPOLLIN | EPOLLRDNORM;    /* readable */
 	spin_unlock_irqrestore(&rp->b_lock, flags);
 	return mask;
 }